Engine: All engines have a timing chain and many sound worryingly rattly from cold. Nothing seems to cure it, but at least make sure the engine has enjoyed regular oil changes. Hesitancy or misfiring may be worn coil packs or the emissions system. Air flow sensor problems aren’t uncommon and will trigger the engine management light.
Gearbox: Manuals can suffer a worn gear linkage, even at low mileages, which affects selection of first, second and reverse. As a learner or first-car favourite, clutches take a hammering.
Suspension and steering: The Corsa is light so fairly easy on the suspension, but check the dampers for leaks and that the steering is true.
Brakes, wheels and tyres: These can betray a lack of care and insufficient funds for routine servicing. Check the discs aren’t too heavily lipped, the tyres are good quality and evenly worn and that the wheels aren’t kerbed beyond repair.
Interior: Where fitted, check the car’s USB connections are working and that your phone can talk to the infotainment system.
Body: Check it has a heated windscreen; when it’s cracked, some owners save money by having a non-heated replacement fitted.